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RE: starship-design: solar sail

To: "Curtis L. Manges" <clmanges@worldnet.att.net>, <starship-design@lists.uoregon.edu>
Subject: RE: starship-design: solar sail
From: "L. Clayton Parker" <lparker@cacaphony.net>
Date: Tue, 2 Mar 1999 08:52:52 -0600
Importance: Normal
In-Reply-To: <36DB4116.B828C35F@worldnet.att.net>
Reply-To: "L. Clayton Parker" <lparker@cacaphony.net>
Sender: owner-starship-design@lists.uoregon.edu

Curtis,

Sorry, using the simple periscope arrangement you describe, net thrust
equals zero.

> -----Original Message-----
> Near arrival, the shape changes (requiring the services of the Mad
> Topologist) to something more like a half-folded umbrella, with a middle
> concentric section of the sail being removed, and the inner and outer
> concentric sail sections forming a mirror system which sends the laser
> beam on ahead of you, hopefully providing some reverse pressure. Think
> of a simple periscope to envision the ray paths.


Lee Parker

References:
- starship-design: solar sail
  - From: "Curtis L. Manges" <clmanges@worldnet.att.net>

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